It wasn't sega and it wasn't against CA's will (for MTW2 at least). Developing new file formats that hold the full information required for the engine to show the game world as it is meant to be is difficult to do, and CA used third-party software to achieve this. They had thought that they could release convertors to the public, however there was apparently some issues surrounding the release of what are essentially property of another country. I imagine that there would have been a licensing fee that, at the end of the day, could not be paid and so CA were unable to release the appropriate tools as they originally said.

I don't know the reasons behind Empire's unmoddability, but speculation based on flawed and biased views of how a game is created is hardly worthy of posting. CA and/or SEGA bashing isn't really required here. Get back on topic or move we'll move it elsewhere.

Foot